Craig - weird issue with the podcast feed on iPhone

@Teleclashter - I've been meaning to ask about this for ages and didn't think of it when I saw you.

On my iPhone, there is one episode of the Tuesday podcast that I can't seem to get rid of. It is the 4/26/16 episode. Unlike every other episode before and since, it didn't delete after I listened to it. I've tried deleting it manually and it comes back. I've even tried letting it play through again but it still doesn't go away. Do you have any clue why this is happening or how to fix it? Thanks.